neobytes/doc/files.md
Alexander Block 2f21e55514 Remove legacy InstantSend code (#3020)
* Remove ppszTypeName from protocol.cpp and reimplement GetCommand

This removes the need to carefully maintain ppszTypeName, which required
correct order and also did not allow to permanently remove old message
types.

To get the command name for an INV type, GetCommandInternal uses a switch
which needs to be maintained from now on.

The way this is implemented also resembles the way it is implemented in
Bitcoin today, but it's not identical. The original PR that introduced the
switch case in Bitcoin was part of the Segwit changes and thus never got
backported. I decided to implement it in a slightly different way that
avoids throwing exceptions when an unknown INV type is encountered.

IsKnownType will now also leverage GetCommandInternal() to figure out if
the INV type is known locally. This has the side effect of old/legacy
message types to return false from now on. We will depend on this side
effect in later commits when we remove legacy InstantSend code.

* Stop handling/relaying legacy IX messages

When we receive an IX message, we simply treat it as a regular TX and relay
it as such.

We'll however still request IX messages when they are announced to us. We
can't simply revert to requesting TX messages in this case as it might
result in the other peer not answering due to the TX not being in mapRelay
yet. We should at some point in the future completely drop handling of IX
messages instead.

* Remove IsNewInstantSendEnabled() and only use IsInstantSendEnabled()

* Remove legacy InstantSend from GUI

* Remove InstantSend from Bitcoin/Dash URIs

* Remove legacy InstantSend from RPC commands

* Remove legacy InstantSend from wallet

* Remove legacy instantsend.h include

* Remove legacy InstantSend from validation code

* Completely remove remaining legacy InstantSend code

* Remove now unused spork

* Fix InstantSend related test failures

* Remove now obsolete auto IS tests

* Make spork2 and spork3 disabled by default

This should have no influence on mainnet as these sporks are actually set
there. This will however affect regtest, which shouldn't have LLMQ based
InstantSend enabled by default.

* Remove instantsend tests from dip3-deterministicmns.py

These were only testing legacy InstantSend

* Fix .QCheckBox#checkUsePrivateSend styling a bit

* s/TXLEGACYLOCKREQUEST/LEGACYTXLOCKREQUEST/

* Revert "verified via InstantSend" back to "verified via LLMQ based InstantSend"

* Use cmd == nullptr instead of !cmd

* Remove last parameter from AvailableCoins call

This was for fUseInstantSend which is not present anymore since rebase
2019-07-09 17:50:08 +03:00

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Markdown

* banlist.dat: stores the IPs/Subnets of banned nodes
* blocks/blk000??.dat: block data (custom, 128 MiB per file)
* blocks/rev000??.dat; block undo data (custom)
* blocks/index/*; block index (LevelDB)
* chainstate/*; block chain state database (LevelDB)
* dash.conf: contains configuration settings for dashd or dash-qt
* dashd.pid: stores the process id of dashd while running
* database/*: BDB database environment; only used for wallet
* db.log: wallet database log file
* debug.log: contains debug information and general logging generated by dashd or dash-qt
* evodb/*: special txes and quorums database
* fee_estimates.dat: stores statistics used to estimate minimum transaction fees and priorities required for confirmation
* governance.dat: stores data for governance obgects
* llmq/*: quorum signatures database
* mempool.dat: dump of the mempool's transactions
* mncache.dat: stores data for masternode list
* netfulfilled.dat: stores data about recently made network requests
* peers.dat: peer IP address database (custom format)
* wallet.dat: personal wallet (BDB) with keys and transactions
* .cookie: session RPC authentication cookie (written at start when cookie authentication is used, deleted on shutdown)
* onion_private_key: cached Tor hidden service private key for `-listenonion`